Database Systems: Design, Implementation, & Management
Database Systems: Design, Implementation, & Management
13th Edition
ISBN: 9780357155868
Author: Carlos Coronel; Steven Morris
Publisher: Cengage Learning US
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Chapter 5, Problem 5P

Explanation of Solution

Crow’s Foot ER diagram for Tiny College:

The following data model shows the solution for the given question.

Explanation:

  • In the above data model, the overlapping constraint (o) is used as a category symbol. Here the “Employee” supertype entity has optional subtype entity.
  • The “Professor” and “School” are the current data entities which mean the user can get the data from the current database...

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